hangs if window too small

[maierl]

If I do not change the default window size of the cell viewer, ClearVolume hangs until I reset the viewer node and resize before opening the ClearVolume tab:

--== GET VIEW COMPONENT ==--
--== UPDATE COMPONENT ==--
ClearGLWindow: GLProfile[GL4bc/GL4bc.hw]
Platform: NVIDIA CUDA {vendor: NVIDIA Corporation, version: OpenCL 1.2 CUDA 7.5.
9, profile: FULL_PROFILE, extensions: [cl_khr_byte_addressable_store, cl_khr_icd
, cl_khr_gl_sharing, cl_nv_compiler_options, cl_nv_device_attribute_query, cl_nv
_pragma_unroll, cl_nv_d3d9_sharing, cl_nv_d3d10_sharing, cl_khr_d3d10_sharing, c
l_nv_d3d11_sharing, cl_nv_copy_opts]}
        #device: Quadro K2000 (NVIDIA CUDA)
                *opencl version: OpenCL C 1.2
                *driver version: 353.30
                *max mem alloc size: 536870912
                *global mem size: 2147483648
                *max compute units: 2
                *max clock freq: 954
                *3d volume max width: 4096
                *3d volume max height: 4096
                *3d volume max depth: 4096
                *isHostUnifiedMemory: false
NVIDIA CUDA.Quadro K2000 L48k/G 2048M mem with 2 compute units
Quadro K2000 is best in platform NVIDIA CUDA
Found best device to be: Quadro K2000 from platform NVIDIA CUDA
Device name:     Quadro K2000 (NVIDIA CUDA)
Jun 24, 2015 4:38:43 PM com.nativelibs4java.opencl.JavaCL log
WARNING: clCreateImage3D is deprecated from OpenCL version 1.2 (detected version
 is 1.2)
Jun 24, 2015 4:38:43 PM com.nativelibs4java.opencl.JavaCL log
WARNING: clCreateImage2D is deprecated from OpenCL version 1.2 (detected version
 is 1.2)







Exception in thread "AWT-EventQueue-0-FPSAWTAnimator#00-Timer0" com.jogamp.openg
l.util.AnimatorBase$UncaughtAnimatorException: javax.media.opengl.GLException: C
aught IllegalArgumentException: Buffer size must be greater than zero (asked for
 size 0) on thread AWT-EventQueue-0-FPSAWTAnimator#00-Timer0
        at com.jogamp.opengl.util.AWTAnimatorImpl.display(AWTAnimatorImpl.java:8
4)
        at com.jogamp.opengl.util.AnimatorBase.display(AnimatorBase.java:449)
        at com.jogamp.opengl.util.FPSAnimator$MainTask.run(FPSAnimator.java:176)

        at java.util.TimerThread.mainLoop(Unknown Source)
        at java.util.TimerThread.run(Unknown Source)
Caused by: javax.media.opengl.GLException: Caught IllegalArgumentException: Buff
er size must be greater than zero (asked for size 0) on thread AWT-EventQueue-0-
FPSAWTAnimator#00-Timer0
        at javax.media.opengl.GLException.newGLException(GLException.java:75)
        at jogamp.opengl.GLDrawableHelper.invokeGLImpl(GLDrawableHelper.java:131
1)
        at jogamp.opengl.GLDrawableHelper.invokeGL(GLDrawableHelper.java:1131)
        at com.jogamp.newt.opengl.GLWindow.display(GLWindow.java:675)
        at com.jogamp.opengl.util.AWTAnimatorImpl.display(AWTAnimatorImpl.java:7
7)
        ... 4 more
Caused by: java.lang.IllegalArgumentException: Buffer size must be greater than
zero (asked for size 0)
        at com.nativelibs4java.opencl.CLContext.createBuffer(CLContext.java:1142
)
        at com.nativelibs4java.opencl.CLContext.createBuffer(CLContext.java:1133
)
        at com.nativelibs4java.opencl.CLContext.createBuffer(CLContext.java:1120
)
        at com.nativelibs4java.opencl.CLContext.createIntBuffer(CLContext.java:7
61)
        at clearvolume.renderer.opencl.OpenCLDevice.createInputOutputIntBuffer(O
penCLDevice.java:582)
        at clearvolume.renderer.opencl.OpenCLVolumeRenderer.notifyChangeOfTextur
eDimensions(OpenCLVolumeRenderer.java:171)
        at clearvolume.renderer.cleargl.ClearGLVolumeRenderer.ensureTextureAlloc
ated(ClearGLVolumeRenderer.java:627)
        at clearvolume.renderer.cleargl.ClearGLVolumeRenderer.displayInternal(Cl
earGLVolumeRenderer.java:686)
        at clearvolume.renderer.cleargl.ClearGLVolumeRenderer.display(ClearGLVol
umeRenderer.java:667)
        at jogamp.opengl.GLDrawableHelper.displayImpl(GLDrawableHelper.java:690)

        at jogamp.opengl.GLDrawableHelper.display(GLDrawableHelper.java:672)
        at jogamp.opengl.GLAutoDrawableBase$2.run(GLAutoDrawableBase.java:441)
        at jogamp.opengl.GLDrawableHelper.invokeGLImpl(GLDrawableHelper.java:127
7)
        ... 7 more
OPENGL ERROR BEFORE RENDER VOLUME #1281 : invalid value
Exception in thread "AWT-EventQueue-0-Display-.windows_nil-1-EDT-1" javax.media.
opengl.GLException: Caught RuntimeException: This CLBuffer has been manually rel
eased and can't be used anymore ! on thread AWT-EventQueue-0-Display-.windows_ni
l-1-EDT-1
        at javax.media.opengl.GLException.newGLException(GLException.java:75)
        at jogamp.opengl.GLDrawableHelper.invokeGLImpl(GLDrawableHelper.java:131
1)
        at jogamp.opengl.GLDrawableHelper.invokeGL(GLDrawableHelper.java:1131)
        at com.jogamp.newt.opengl.GLWindow.display(GLWindow.java:675)
        at jogamp.opengl.GLAutoDrawableBase.defaultWindowRepaintOp(GLAutoDrawabl
eBase.java:213)
        at com.jogamp.newt.opengl.GLWindow.access$100(GLWindow.java:119)
        at com.jogamp.newt.opengl.GLWindow$2.windowRepaint(GLWindow.java:136)
        at jogamp.newt.WindowImpl.consumeWindowEvent(WindowImpl.java:3692)
        at jogamp.newt.WindowImpl.consumeEvent(WindowImpl.java:2665)
        at jogamp.newt.WindowImpl.doEvent(WindowImpl.java:2611)
        at jogamp.newt.WindowImpl.windowRepaint(WindowImpl.java:3956)
        at jogamp.newt.driver.windows.DisplayDriver.DispatchMessages0(Native Met
hod)
        at jogamp.newt.driver.windows.DisplayDriver.dispatchMessagesNative(Displ
ayDriver.java:120)
        at jogamp.newt.DisplayImpl.dispatchMessages(DisplayImpl.java:733)
        at jogamp.newt.DisplayImpl$7.run(DisplayImpl.java:656)
        at jogamp.newt.DefaultEDTUtil$NEDT.run(DefaultEDTUtil.java:343)
Caused by: java.lang.RuntimeException: This CLBuffer has been manually released
and can't be used anymore !
        at com.nativelibs4java.opencl.CLAbstractEntity.checkNullity(CLAbstractEn
tity.java:130)
        at com.nativelibs4java.opencl.CLAbstractEntity.getEntity(CLAbstractEntit
y.java:134)
        at com.nativelibs4java.opencl.CLKernel.setArg(CLKernel.java:406)
        at com.nativelibs4java.opencl.CLKernel.setObjectArg(CLKernel.java:201)
        at com.nativelibs4java.opencl.CLKernel.setArgs(CLKernel.java:191)
        at clearvolume.renderer.opencl.OpenCLDevice.setArgs(OpenCLDevice.java:34
4)
        at clearvolume.renderer.opencl.OpenCLVolumeRenderer.runKernel(OpenCLVolu
meRenderer.java:413)
        at clearvolume.renderer.opencl.OpenCLVolumeRenderer.updateBufferAndRunKe
rnel(OpenCLVolumeRenderer.java:361)
        at clearvolume.renderer.opencl.OpenCLVolumeRenderer.renderVolume(OpenCLV
olumeRenderer.java:256)
        at clearvolume.renderer.cleargl.ClearGLVolumeRenderer.displayInternal(Cl
earGLVolumeRenderer.java:731)
        at clearvolume.renderer.cleargl.ClearGLVolumeRenderer.display(ClearGLVol
umeRenderer.java:667)
        at jogamp.opengl.GLDrawableHelper.displayImpl(GLDrawableHelper.java:690)

        at jogamp.opengl.GLDrawableHelper.display(GLDrawableHelper.java:672)
        at jogamp.opengl.GLAutoDrawableBase$2.run(GLAutoDrawableBase.java:441)
        at jogamp.opengl.GLDrawableHelper.invokeGLImpl(GLDrawableHelper.java:127
7)
        ... 14 more